# AI错题树 vs AI题库工厂

AI错题树 and AI题库工厂 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. AI错题树 sells 3 one-off in-app purchases and AI题库工厂 sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | AI错题树 | AI题库工厂 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6771737023/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 5 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [南京五脉生物科技有限公司](https://appshunter.io/developer/6771737025) | [涛 张](https://appshunter.io/developer/6788399775) |

## What reviewers say

### AI错题树

[App page](https://appshunter.io/ios/app/ai/id6771737023)

Effortlessly capture and analyze your mistakes from tests and homework using AI. Organize errors by subject and type, receive correct problem-solving approaches, and track your learning progress to identify weak areas.

**Highlights:** Photo upload for questions and test papers, AI error diagnosis and correction guidance, Organize mistakes by subject and error type, Track learning progress and identify weak areas, Privacy protection with local AI analysis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 AI calls | $0.99 | one-time |
| 1000 AI Calls | $4.99 | one-time |
| 5000 AI Calls | $24.99 | one-time |


### AI题库工厂

[App page](https://appshunter.io/ios/app/ai/id6798214539)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 月度会员 | $0.99 | per month |
| Pro 年度会员 | $12.99 | per year |


## Frequently asked questions

### Is AI错题树 free?

AI错题树 is free to download, with in-app purchases available.

### Is AI题库工厂 free?

AI题库工厂 is free to download, with in-app purchases available.

### Do AI错题树 or AI题库工厂 have ads?

Neither AI错题树 nor AI题库工厂 shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*